package com.sky.aspect;


import com.sky.annotation.AutoFill;
import com.sky.constant.AutoFillConstant;
import com.sky.context.BaseContext;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.time.LocalDateTime;

@Slf4j
@Component
@Aspect
public class AutoFillAspect {
    @Pointcut("execution(* com.sky.mapper.*.*(..))&& @annotation(com.sky.annotation.AutoFill)")
    public void autoFillPointCut(){

    }
    @Before("autoFillPointCut()")
    public void autoFill(JoinPoint joinPoint){
        log.info("开始进行公共字段自动填充");
        MethodSignature signature = (MethodSignature)joinPoint.getSignature();
        AutoFill autoFill = signature.getMethod().getAnnotation(AutoFill.class);
        OperationType operationType = autoFill.value();
        Object[] args = joinPoint.getArgs();
        if(args!=null&&args.length==0){
            return;

        }
        Object entity = args[0];
        LocalDateTime now=LocalDateTime.now();
        Long currentId = BaseContext.getCurrentId();

        if(operationType==OperationType.INSERT){
            try {
                Method declaredMethod = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_TIME, LocalDateTime.class);
                Method declaredMethod1 = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_USER, Long.class);
                Method declaredMethod2 = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
                Method declaredMethod3 = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);


                declaredMethod.invoke(entity,now);
                declaredMethod1.invoke(entity,currentId);
                declaredMethod2.invoke(entity,now);
                declaredMethod3.invoke(entity,currentId);
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        } else if (operationType == OperationType.UPDATE) {
            try {

                Method declaredMethod2 = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
                Method declaredMethod3 = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);


                declaredMethod2.invoke(entity,now);
                declaredMethod3.invoke(entity,currentId);
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }

    }
}
